Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (6): 060301 doi: 10.13538/j.1001-8042/nst.25.060301


Radiation synthesis of polymer/clay nanocomposite hydrogels with high mechanical strength

MA Rong-Fang1,  YUAN Jie1,  LI Can-Can2,  PENG Jing1,  DONG Zhen1,  XU Ling3,  LI Jiu-Qiang1,  ZHAI Mao-Lin1   

  1. 1Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science,the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
    2School of Materials and Engineering, University of Science and Technology Beijing, Beijing 100083, China
    3Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China
  • Contact: ZHAI Mao-Lin
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos. 91126014 and 11079007)

MA Rong-Fang, YUAN Jie, LI Can-Can, PENG Jing, DONG Zhen, XU Ling, LI Jiu-Qiang, ZHAI Mao-Lin. Radiation synthesis of polymer/clay nanocomposite hydrogels with high mechanical strength.Nuclear Science and Techniques, 2014, 25(6): 060301     doi: 10.13538/j.1001-8042/nst.25.060301


Poor mechanical properties of PNIPAAm hydrogels have limited their applications. Nanocomposite hydrogels
(NC gels) which incorporate inorganic clay possess high mechanical strength and other desirable properties.
In this paper, we report a facile approach to synthesize NC gels using radiation technique. With exfoliated clay
sheets acting as crosslinkers, N-isopropylacrylamide monomers are polymerized and crosslinked to form NC
gels under γ-irradiation at room temperature. Apart from regular swelling behavior and interesting performance
in thermo sensitivity, the radiation synthesized NC gel (RNC gel) has good optical transparency, high
strength and flexibility. Through Micro-FTIR, XPS and TG analyses, a particular chemically crosslinked organic/
inorganic network was identified in the RNC gel.

Key words: Clay, Mechanical properties, Irradiation, Stimuli-sensitive polymers, Composites